CVE-2026-17089Events Manager <= 7.4.0.1 - Reflected Cross-Site Scripting via 'header_format' Parameter
Updated under an hour ago ()
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It affects netweblogic Events Manager – Calendar, Bookings, Tickets, and more!. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The Events Manager – Calendar, Bookings, Tickets, and more! plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'header_format' parameter in all versions up to, and including, 7.4.0.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The shortcode entry point sanitizes 'header_format' via wp_kses(), but the unauthenticated 'search_events_grouped' AJAX action bypasses this sanitization entirely, leaving the parameter unsanitized before it is echoed into the HTML body in output_grouped().
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
netweblogic Events Manager – Calendar, Bookings, Tickets, and more! netweblogic:events_manager_calendar_bookings_tickets_and_more (from the name) | through 7.4.0.1 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a56d1a9e-7564-41b0-af03-c272ffbbbb97?source=cve
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.3.4/classes/em-events.php#L469
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.4.0.1/classes/em-events.php#L469
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.4.0.1/classes/em-object.php#L1176
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.4.0.1/em-actions.php#L891
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.4.0.1/em-actions.php#L920
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.3.4/classes/em-object.php#L1176
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.3.4/em-actions.php#L891
- https://plugins.trac.wordpress.org/browser/events-manager/tags/7.3.4/em-actions.php#L920
- https://plugins.trac.wordpress.org/changeset?old_path=/events-manager/tags/7.4.0.1&new_path=/events-manager/tags/7.4.1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.